Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 593rd dzshn 892 60 10ms 3 Dec 2022 593rd biocommando 🇫🇮 892 60 10ms 20 Dec 2022 593rd Betuaredead 892 60 9ms 5 Jan 2023 593rd piano-miles 892 60 10ms 16 Jan 2023 593rd Yewzir 🇧🇪 892 60 10ms 12 Feb 2023 593rd shellbertt 🇨🇦 892 60 11ms 26 Feb 2023 593rd zakariamouhid 892 60 10ms 20 May 2023 593rd raphaelimahorn 892 60 10ms 23 Aug 2023 593rd jbt 892 60 10ms 25 Dec 2023 593rd olleicua 🇺🇸 892 60 10ms 15 Feb 2024 593rd HumanoidCPU 892 60 9ms 3 May 2024 593rd dokutan 892 60 11ms 13 Aug 2024 593rd LostSyntax21 🇬🇧 892 60 11ms 10 Sep 2024 593rd xyangst 892 60 11ms 28 Sep 2024 593rd a6166231 🇨🇳 892 60 9ms 15 May 2025 593rd Protothor 892 60 11ms 8 Jul 2025 593rd SebassNoob 892 60 10ms 5 Aug 2025 593rd Yax42 🇫🇷 892 60 9ms 5 Sep 2025 593rd levinwinter 892 60 9ms 22 days ago 620th stefangimmillaro 892 71 89ms 2 Oct 2022 620th Steffan153 🇫🇮 892 71 90ms 23 Feb 2023 620th Shanethegamer 🇺🇸 892 71 89ms 16 May 2023 620th sean-niemann 🇺🇸 892 71 92ms 12 Jul 2024 624th RockOfStone 892 73 5ms 24 days ago 625th sean-niemann 🇺🇸 892 109 261ms 25 May 2024 625th GolfingSuccess 🇬🇷 892 109 252ms 6 Sep 2025 627th lynn 891 65 316ms 5 May 2022 627th GrayJoKing 🇦🇺 891 65 327ms 5 May 2022 627th Sakisan 🇧🇪 891 65 214ms 6 May 2022 627th JayXon 🇺🇸 891 65 366ms 17 Oct 2022 627th Steffan153 🇫🇮 891 65 172ms 12 Nov 2022 627th tobeannouncd 891 65 331ms 25 Apr 2025 627th sean-niemann 🇺🇸 891 65 174ms 9 Jun 2025 634th GrayJoKing 🇦🇺 891 77 76ms 13 Sep 2024 635th DialFrost 🇸🇬 891 95 32ms 10 Dec 2024 636th canissimia 🇦🇶 891 110 3,068ms 20 Feb 2023 637th primo-ppcg 🇹🇭 890 52 213ms 5 May 2022 637th dvargas46 🇺🇸 890 52 83ms 22 Dec 2022 639th DialFrost 🇸🇬 890 56 820ms 1 Sep 2025 640th mousetail 🇳🇱 888 41 73ms 29 Aug 2025 641st MeWhenI 🇻🇦 888 53 41ms 1 Jun 2022 641st stefangimmillaro 888 53 38ms 2 Oct 2022 641st Haksell 🇦🇶 888 53 40ms 22 Feb 2023 644th primo-ppcg 🇹🇭 888 85 43ms 14 Jan 2025 644th MeWhenI 🇻🇦 888 85 44ms 21 Apr 2025 646th jared-hughes 888 130 23ms 15 Dec 2024 647th canissimia 🇦🇶 888 204 16ms 25 Nov 2023 648th AdamHe17 887 73 20ms 31 May 2022 648th AliceFord 887 73 26ms 2 Jun 2022 648th Natanaelel 🇸🇪 887 73 23ms 16 Jun 2022 648th btjones0 887 73 25ms 21 Jun 2022 648th marcin7Cd 887 73 22ms 27 Jun 2022 648th tri1212 🇻🇳 887 73 21ms 18 Jul 2022 648th vhoulbreque 🇫🇷 887 73 20ms 18 Aug 2022 648th KatieLG 🇬🇧 887 73 20ms 29 Aug 2022 648th tkr-sh 🇰🇵 887 73 25ms 8 Sep 2022 648th jroscoe5 887 73 22ms 15 Sep 2022 648th fredrik-bakke 🇳🇴 887 73 21ms 18 Sep 2022 648th firegene 🇮🇪 887 73 23ms 27 Sep 2022 648th OhmNomNom 887 73 24ms 7 Oct 2022 648th 0-4849 887 73 21ms 1 Nov 2022 648th M0PKOBKA 887 73 30ms 19 Dec 2022 648th calumacutt 887 73 24ms 19 Dec 2022 648th thehylian 887 73 21ms 2 Jan 2023 648th fynnkroeger 887 73 28ms 6 Jan 2023 648th shellbertt 🇨🇦 887 73 21ms 13 Jan 2023 648th hunt-g 887 73 22ms 4 Feb 2023 648th ljweel 887 73 20ms 13 Feb 2023 648th jmerle 🇳🇱 887 73 21ms 16 Feb 2023 648th TaserTheFox 🇺🇸 887 73 22ms 14 Mar 2023 648th pinguicula 887 73 19ms 6 Apr 2023 648th TheoKeller1 887 73 28ms 11 Jun 2023 648th fkantelberg 887 73 23ms 16 Jul 2023 648th Mikey-Beep 🇬🇧 887 73 21ms 31 Aug 2023 648th eiburns 887 73 24ms 9 Oct 2023 First Prev 601–675 of 3,460 Next Last
